GTL File

What are GTL files and how to open them

Are you having problems opening a GTL file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a GTL file?

The GTL file extension indicates to your device which app can open the file. However, different programs may use the GTL file type for different types of data.

While we do not yet describe the GTL file format and its common uses, we do know which programs are known to open these files, as we receive dozens of suggestions from users like yourself every day about specific file types and which programs they use to open them.

We are continually working on adding more file type descriptions to the site, so if you have information about GTL files that you think will help others, please use the Update Info link below to submit it to us - we'd love to hear from you!

How to open GTL files

Important: Different programs may use files with the GTL file extension for different purposes, so unless you are sure which format your GTL file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 8 different GTL openers which you will find listed below.

Various apps that use files with this extension

These apps are known to open certain types of GTL files. Remember, different programs may use GTL files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Altium DesignerAltium DesignerUser submitted
GEO5GEO5User submitted
GeoGeoUser submitted
Protel DXPProtel DXPUser submitted
AcqKnowledgeAcqKnowledgeUser submitted
ALTIUMALTIUMUser submitted
AD13AD13User submitted
Geo4Geo4User submitted

Try a universal file viewer

Try a universal file viewer like Bitberry File Opener. It can open 410 different types of files - and most likely yours too. Download Bitberry File Opener here.

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about GTL file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.